Output Signals

The ECU processes information from input sensors and sends appropriate voltage control signals to control (output) devices. Not all devices are used on all models. For theory and operation of specific output components, refer to system indicated in brackets.

• Air Injection System Vacuum Switching Valve (Air Injection System - I-Mark)
• Air Switching Valve (Air Injection System - Amigo & Pickup)
• "CHECK ENGINE" LIGHT (Self-Diagnostic System)
• Early Fuel Evaporation (EFE) Heater & Relay (Emissions System)
• Fuel-Cut (Slow Cut) Solenoid (Fuel Control System)
• Idle-Up Solenoid Valve(s) (Idle Control System)
• Mixture Control (Duty) Solenoid (Fuel Control System)
• Shift Indicator Light Module (Self-Diagnostic System - I-Mark)